Japanese websites crippled by Russian hackers

The attacks, which may have been perpetrated by Killnet, come a day after the group claimed responsibility for assaults on Japanese government websites. At around 6:30 p.m. on Wednesday, Killnet wrote on messaging app Telegram that it had declared war against what it called Japan's anti-Russian campaign, and also uploaded a video. Shortly after at around 7 p.m., the group posted again claiming it would stop Tokyo's subway network. The latest disruption appears to have been caused by another DDoS attack, in which a network is overwhelmed by hackers sending floods of data from multiple sources over a short period.

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Access to 23 websites across four government ministries was disrupted, Chief Cabinet Secretary Hirokazu Matsuno told a Wednesday press conference. He also noted that the websites had returned to functionality and no data leaks had been confirmed at the time. On Tuesday, Killnet posted on its Telegram claiming responsibility for the attacks and appeared to write that it was revolting against Japan's "militarism" and kicking the samurai.

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